RK73B1HTTC475G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC475G is a 4.7 MOhm thick film chip resistor manufactured by KOA Speer Electronics, Inc., designed for automotive applications with AEC-Q200 qualification. This 0201 package resistor delivers 0.05W power rating with ±2% tolerance and operates across -55°C to 155°C temperature range.

The RK73B1HTTC475G carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts ensures design continuity, maintains supply chain reliability, and supports long-term production requirements for existing applications.

Substiute Parts

RK73B1HTTC475G

KOA Speer Electronics, Inc.In Stock: 1002RK73B1HTTC475G Datasheet

Current PartRFQ

RK73B1HTTCM475G

KOA Speer Electronics, Inc.In Stock: 1062RK73B1HTTCM475G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73B1HTTC475G is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Resistance value (4.7 MOhms), tolerance (±2%), power rating (0.05W), and temperature coefficient (±200ppm/°C) must match exactly.

Package & Physical Parameters: The 0201 (0603 Metric) package designation, physical dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm), and maximum seated height (0.010" / 0.26mm) must be identical.

Environmental & Compliance Parameters: Operating temperature range (-55°C ~ 155°C), AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating must be maintained.

Composition & Construction: Thick film construction type is required for functional equivalence.

Substitute parts must satisfy all parameters listed above without exception. Parts differing in any electrical, mechanical, or compliance specification are not considered equivalent.

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM475G serves as the direct equivalent substitute for the RK73B1HTTC475G. Both parts are manufactured by KOA Speer Electronics, Inc., and maintain identical electrical, mechanical, and environmental specifications across all critical parameters.

The primary distinction between these parts is product lifecycle status: the RK73B1HTTC475G is designated "Not For New Designs," while the RK73B1HTTCM475G carries "Active" status. This indicates the RK73B1HTTCM475G represents the current production equivalent within the RK73B series.

Both parts satisfy AEC-Q200 automotive qualification requirements and ROHS3 compliance mandates. The identical MSL 1 rating confirms equivalent moisture handling and storage requirements. Selection between these parts should be based on supply chain availability and production timeline requirements, as functional performance and circuit compatibility are fully equivalent.

Frequently Asked Questions (FAQ)

Q: Can the RK73B1HTTCM475G be used as a direct replacement for the RK73B1HTTC475G in existing designs?

A: Yes. The RK73B1HTTCM475G is electrically and mechanically equivalent to the RK73B1HTTC475G. All critical parameters—resistance, tolerance, power rating, package dimensions, temperature range, and automotive certification—are identical. Direct substitution is supported without circuit modification.

Q: What is the significance of the "Not For New Designs" status on the RK73B1HTTC475G?

A: This designation indicates the part has been superseded in the manufacturer's product line. The RK73B1HTTCM475G is the active equivalent. For new design implementations, the RK73B1HTTCM475G should be specified. Existing designs using the RK73B1HTTC475G may continue operation; substitution to the active part is recommended for long-term supply assurance.

Q: Are the package dimensions identical between these parts?

A: Yes. Both parts use the 0201 (0603 Metric) package with identical physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). PCB layout and assembly processes require no modification.

Q: Do both parts meet automotive qualification standards?

A: Yes. Both the RK73B1HTTC475G and RK73B1HTTCM475G carry AEC-Q200 automotive qualification and ROHS3 compliance certification. They are suitable for automotive applications requiring these standards.

Q: Is there a difference in moisture sensitivity between these parts?

A: No. Both parts carry MSL 1 (Unlimited) rating, indicating identical moisture sensitivity levels and equivalent storage and handling requirements.

Q: What is the difference between the part numbers RK73B1HTTC475G and RK73B1HTTCM475G?

A: The difference is indicated by the "M" character in the RK73B1HTTCM475G designation. This typically reflects a product lifecycle update within the manufacturer's series. All electrical and mechanical specifications remain identical; the change represents a manufacturing or availability update rather than a functional modification.